#include <iostream>
#include <conio.h>
#include <string>
#include <string.h>
#include <sstream>
using namespace std;

struct para{
private:
	float first;
	int second;
public:
	para(float n, int m) { first = n; second = m; }
	para() { first = 0; second = 0; }
	para(para &a) {
		first = a.first;
		second = a.second;
	}
	string toString() {
		string str ="";
		str+="Cena :";
		str+=first;
		str+="Kolichestvo : ";
		str+=second;
		return str;
	}
	para operator=(para& a) {
		this->first = a.first;
		this->second = a.second;
		return *this;
	}
	friend void Vvod(para& a);
	friend void Vuvod(para& a);
	para operator++() {
		this->second++;
		return *this;
	}
	para operator--() {
		this->second--;
		return* this;
	}
	para operator++(int) {
		++this->second;
		return* this;
	}
	para operator--(int) {
		--this->second;
		return *this;
	}
	para operator+(para &a) {
		para tmp;
		tmp.first = this->first + a.first;
		tmp.second = this->second + a.second;
		return tmp;
	}
	para operator-(para &a) {
		para tmp;
		tmp.first = this->first - a.first;
		tmp.second = this->second - a.second;
		return tmp;
	}
	friend para operator*(para &a,para &b);
};
para operator*(para &a,para &b) {
	para tmp;
	tmp.first = a.first * b.first;
	tmp.second = a.second * b.second;
	return tmp;
}

void Vvod(para& a) {
	cout << "Vvedite cenu : ";
	cin >> a.first;
	cout << "Vvedite kolichestov : ";
	cin >> a.second;
};
void Vuvod(para& a) {
	cout << "Cena : " << a.first << endl;
	cout << "Kolichestvo : " << a.second << endl;
};

void main() {
	para a(15, 25);
	para b(a);
	para d = a;
	para c;
	char ch;
	do {
		cout << "1 - dlya vvoda informacui"
			"\n2 - dlya vuvoda informacui"
			"\n3 - dlya inkrementa"
			"\n4 - dlya dekrimenta"
			"\n5 - dlya slojeniya dvux objectov"
			"\n6 - dlya vuchitanie dvux opjectov"
			"\n7 - dlya peremnojeniya dvux objectov"
			"\n8 - exit\n";
		ch = _getch();
		switch (ch) {
		case'1': {
			cout << "Vvod znacheniy dlya peremennoy A" << endl;
			Vvod(a);
			cout << "Vvod znacheniy dlya peremennoy B" << endl;
			Vvod(b);
			break;
		}
		case'2': {
			cout << "Vuvod znacheniy peremennoy A" << endl;
			Vuvod(a);
			cout << "Vuvod znacheniy peremennoy B" << endl;
			Vuvod(b);
			break;
		}
		case'3': {
			cout << "Inkrement kolichestva peremennoy A" << endl;
			a++;
			cout << "Inkrement kolichestva peremennoy B" << endl;
			b++;
			break;
		}
		case'4': {
			cout << "Dekriment kolichestva peremennoy A" << endl;
			a--;
			cout << "Dekriment kolichestva peremennoy B" << endl;
			b--;
			break;
		}
		case'5': {
			cout << "A + B" << endl;
			d = a + b;
			Vuvod(d);
			break;
		}
		case'6': {
			cout << "A - B" << endl;
			d = a - b;
			Vuvod(d);
			break;
		}
		case'7': {
			cout << " A * B" << endl;
			d = a*b;
			Vuvod(d);
			break;
		}
		}
	} while (ch != '8');
}